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All results from a given calculation for C5H8 (1,2-Pentadiene)

using model chemistry: HF/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A'
Energy calculated at HF/6-31G**
 hartrees
Energy at 0K-193.947114
Energy at 298.15K-193.954784
Nuclear repulsion energy157.112729
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3380 3051 7.11      
2 A 3304 2982 12.22      
3 A 3301 2979 9.73      
4 A 3263 2945 49.11      
5 A 3256 2939 50.30      
6 A 3197 2885 28.14      
7 A 3190 2879 25.83      
8 A 3171 2862 53.99      
9 A 2222 2005 47.65      
10 A 1631 1472 3.00      
11 A 1625 1466 1.47      
12 A 1624 1466 4.97      
13 A 1612 1455 0.66      
14 A 1555 1403 3.56      
15 A 1500 1354 23.82      
16 A 1474 1331 0.07      
17 A 1401 1265 0.25      
18 A 1237 1117 0.65      
19 A 1209 1091 3.31      
20 A 1180 1065 4.22      
21 A 1122 1013 0.77      
22 A 1067 963 0.20      
23 A 1001 904 57.26      
24 A 998 901 14.75      
25 A 902 814 1.21      
26 A 853 770 2.03      
27 A 689 622 4.20      
28 A 578 521 2.90      
29 A 395 356 2.51      
30 A 371 335 6.15      
31 A 274 248 0.01      
32 A 167 150 0.20      
33 A 105 95 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 26426.0 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 23852.1 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at HF/6-31G**
ABC
0.34580 0.10630 0.08523

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.367 0.513 -0.000
C2 1.529 -1.003 0.000
C3 -0.064 1.003 0.001
C4 -1.126 0.260 -0.001
C5 -2.196 -0.474 0.000
H6 1.870 0.935 -0.869
H7 1.871 0.936 0.867
H8 1.069 -1.446 0.877
H9 2.580 -1.271 -0.001
H10 1.067 -1.447 -0.875
H11 -0.205 2.074 0.002
H12 -2.655 -0.789 0.921
H13 -2.658 -0.788 -0.920

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 H6 H7 H8 H9 H10 H11 H12 H13
C11.52521.51252.50663.69731.08831.08832.16782.15762.16792.21504.32714.3287
C21.52522.56182.94043.76202.15152.15161.08481.08531.08483.53184.28914.2915
C31.51252.56181.29702.59392.12092.12102.83763.48772.83761.07953.28253.2841
C42.50662.94041.29701.29693.19153.19322.91594.01062.91402.03432.07052.0707
C53.69733.76202.59391.29694.38964.39093.51764.84243.51573.23321.07641.0764
H61.08832.15152.12093.19154.38961.73533.05962.47492.51412.52155.16224.8443
H71.08832.15162.12103.19324.39091.73532.51402.47513.05972.52044.84425.1648
H82.16781.08482.83762.91593.51763.05962.51401.75691.75253.84443.78164.1891
H92.15761.08533.48774.01064.84242.47492.47511.75691.75684.35255.33775.3398
H102.16791.08482.83762.91403.51572.51413.05971.75251.75683.84514.18493.7826
H112.21503.53181.07952.03433.23322.52152.52043.84444.35253.84513.87863.8801
H124.32714.28913.28252.07051.07645.16224.84423.78165.33774.18493.87861.8413
H134.32874.29153.28412.07071.07644.84435.16484.18915.33983.78263.88011.8413

picture of 1,2-Pentadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H8 111.194 C1 C2 H9 110.349
C1 C2 H10 111.201 C1 C3 C4 126.125
C1 C3 H11 116.422 C2 C1 C3 114.982
C2 C1 H6 109.686 C2 C1 H7 109.691
C3 C1 H6 108.161 C3 C1 H7 108.165
C3 C4 C5 179.479 C4 C3 H11 117.453
C4 C5 H12 121.198 C4 C5 H13 121.215
H6 C1 H7 105.738 H8 C2 H9 108.111
H8 C2 H10 107.751 H9 C2 H10 108.109
H12 C5 H13 117.587
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.221 0.396    
2 C -0.338 -0.240    
3 C -0.236 -0.381    
4 C 0.142 0.161    
5 C -0.389 -0.483    
6 H 0.124 -0.057    
7 H 0.124 -0.057    
8 H 0.121 0.055    
9 H 0.112 0.038    
10 H 0.121 0.055    
11 H 0.150 0.143    
12 H 0.145 0.185    
13 H 0.145 0.185    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.388 0.085 0.001 0.397
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.454 1.841 -0.000
y 1.841 -31.500 0.001
z -0.000 0.001 -32.074
Traceless
 xyz
x 1.333 1.841 -0.000
y 1.841 -0.236 0.001
z -0.000 0.001 -1.097
Polar
3z2-r2-2.194
x2-y21.046
xy1.841
xz-0.000
yz0.001


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.726 2.556 0.002
y 2.556 7.184 0.001
z 0.002 0.001 5.375


<r2> (average value of r2) Å2
<r2> 144.720
(<r2>)1/2 12.030